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3 years ago

What is the value of the function y=2x-3 when x = –1? WILL UP VOTE FOR ALL FIVE QUESTIONS

Mathematics

2 answers:

nikdorinn [45]3 years ago

5 0

A
The answer is -5 if u need any more help I am here to help u

vladimir2022 [97]3 years ago

3 0

Your answer is A
2(-1)-3
-2-3
-5

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This figure is made up of a quadrilateral and a semicircle.

Arturiano [62]

Answer:

The correct option is B. The area of the figure is 40.4 units².

Step-by-step explanation:

The line AB divides the figure in two parts one is a rectangle and another is semicircle.

The distance formula is

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of AB is

$AB=\sqrt{(2+3)^2+(4-2)^2}=\sqrt{25+4}=\sqrt{29}$

The length of AD is

$AD=\sqrt{(-1+3)^2+(-3-2)^2}=\sqrt{4+25}=\sqrt{29}$

Since AB=AD, therefore ABCD is a square. The area of the of square is

$A_1=a\times a=\sqrt{29}\times \sqrt{29} =29$

The area of square is 29 units².

The area of a semicircle is

$A_2=\frac{\pi}{2}r^2$

Since AB is the diameter of the semicircle, therefore the radius of the semicircle is

$r=\frac{d}{2}=\frac{\sqrt{29}}{2}$

The area of the semicircle is

$A_2=\frac{3.14}{2}(\frac{\sqrt{29}}{2})^2=40.3825$

The area of the figure is

$A=A_1+A_2=29+11.2825=40.3825\approx 40.4$

Therefore the area of the figure is 40.4 units². Option B is correct.

5 0

4 years ago

What can you do to a 3 to make it a 7, besides just adding 4?

olchik [2.2K]

Answer:

multiply 3 by 2 and add 1 to get 7

Step-by-step explanation:

3x2+1=7

4 0

3 years ago

Read 2 more answers

What is the value of x? Enter your answer in the box. x = A triangle with midsegment parallel to the base. the left side is labe

Nastasia [14]

Answer: 7

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

Question:

STALIN [3.7K]

1a. 6 out of 8, 3/4, or 75%
1b. It is likely that the spinner will land on green.

3 0

3 years ago

HELP!!!!!

podryga [215]

Solve for the x-max or h :\
$-b/(2a)=-8/(2*-2)=2=k$
plug it in to equation to get k:/
$y(2)=-2(2)^2+8(2)+3$
-8+16+3=11=k
$y=a(x-2)^2+11
$
solve for a by pluging (0,0)
then a= -11/4
$y=-11/4(x-2)^2+11$

8 0

4 years ago